Double Shaft Pivot bracket

Double shaft pivot bracket , the part is also a kind of pivot bracket on windscreen wiper system, which is applied to bigger buses, boat etc. The part is similar to the pivot bracket 421-1034 but have two long pins, this pivot side bracket has two threaded pillars, from these two pillars, there to be two shaft assembled. The difficulty of this part is that the structure of the two long threaded pillars, the length is about 65 mm, the key point is to design the pouring gate，the runner, the overflow, the cooling system in proper position. Usually, for experienced Die Casting manufacturer, we will run with solidification analysis to simulate the status of the filling of the melting aluminum, making the final decision on these points. Otherwise, probably the part will have risk of porosity, if so, while machining, there will be big porosity exposed from the thread surfaces, what's worse, while e-coating, during the curing process under 170-200 degree, the porosity will try to expand to get out, leading to pits and bubbles on the part surface, which is serious appearance defects unacceptable.

Prior to the finish of spray coating, this part can have tumbling treatment, this part has a big and stable bottom feature, so tumbling won't cause problem of deformation like 429-1040.  Tumbling is a surface finish which usually used for removing the small flashes, chamfering, even minor scratch mark, crash etc. making the parts consistent, the material of the medium for tumbling is small stone. 

At last, the material of this part is ADC-12, it is Al-Si-Cu serial alloy, the composition of ADC-12 is:(Cu)1.5~3.5, (Si)9.6~12.0, (Mg)≤0.3, (Zn)≤1.0, (Fe)≤1.3, (Mn)≤0.5, (Ni)≤0.5, (Sn)≤0.3, (Pb) ≤0.1, (Cd) ≤0.005, (Al) the remaining.

Material: ADC-12
Cavity Number: 4
Process Technology: High pressure die casting, Cold Chamber
Product Dimensions: Customized
Casting General Tolerance: Grade GB-CT3
Surface Finish: Polishing, Nyloy polishing the second time
Flow Processes: Die casting, Degate, De-slag, Deburr to remove the flash around the ejector pins, Polishing to remove the parting line, Nyloy polish to make the part have more beautiful appearance,CNC Turning, E-coating, Cleaning, Packaging, Inland Shipping to the port as the trad term is FOB NINGBO
Control Measure: Incoming Material Test, First Article inspection, Routing inspection, Final item inspection,  and Outgoing quality control
Inspection Equipment: Caliper, Plug Gage, Screw Gauge
Application: Hardware Parts
Certificate: IATF16949:2016,ISO14001:2015,ISO45001:2018
Lead Time: 30-35 days
Trade Term: FOB Ningbo